Alright, so this is weird but for the last level I just typed out exactly what the walkthrough did. I just read right off the word document and just keeping an eye on the painter with my peripherals to make sure I didn't press the next button too early. Anyway, here are the instructions for the last level. Took me twice to beat it under a minute (not the best path, but it worked)
RIGHT, UP, LEFT, DOWN, RIGHT, UP, DOWN, UP, DOWN, LEFT, DOWN, LEFT, DOWN, LEFT, RIGHT, UP, RIGHT, DOWN, LEFT, RIGHT, LEFT, UP, RIGHT, UP, RIGHT, UP, DOWN, LEFT, DOWN, UP, DOWN, LEFT, RIGHT, LEFT, RIGHT, UP, DOWN, LEFT, RIGHT, UP, RIGHT, UP, DOWN, LEFT, DOWN, LEFT, DOWN, UP, RIGHT, UP, DOWN, UP, LEFT, DOWN, LEFT, UP, RIGHT, LEFT, DOWN, UP, RIGHT, UP, DOWN, LEFT, RIGHT, UP, DOWN, LEFT, DOWN, RIGHT, UP, DOWN, UP, DOWN, LEFT, DOWN, LEFT, DOWN, RIGHT, UP, RIGHT, DOWN, LEFT, RIGHT, LEFT, UP, RIGHT, UP, DOWN, UP, DOWN, UP, RIGHT, LEFT, DOWN, LEFT, RIGHT, LEFT, DOWN, LEFT, RIGHT, UP, RIGHT, UP, RIGHT
Good luck!